Piston-packing.



H. GULBRANSON.

PISTON PACKING. y 'APPLICATION FILED SEPT. 2o, i911.

1,032,204, Patented Jly 9, 1912 2 SHEETS-SHEET l.

Fig" l V Fig. 2.

GuZbrarson/ H. GULBRANSON.

PISTON PACKING.

APPLICATION FILED SEPT. 2o, 1911.

1,032,204. Patnted July I9,x 1912.

2 SHEETS-SHEET 2.

j. Hime Gulbianson Q/ l. Swaw@ @Hamai body/ing the invention.

HANS GULBRANSON, OF MASON CITY, IOWA.

PISTON-PACKING. I

Specification of Letters Patent.

Patented July, 1912.

Application filed September 20, 1911. Serial No. 650,352.

To all 'le/1.0m it may fonemn.:

Be it known that I, Heins (mJne-msov. a machinist., citizen ot the United Stute.` residing' ul Meson tity, in the county ot terro Gordo und Stute o't lown, have invented new and useful improvements in Piston- Peeking. ot which the following' is n speeltieutiion.

The present invention provides u parking' designed ehielly for pistons to insnr. n Close tit bet\\'een the walls ot :i cylinder und the piston arranged to operate therein, the in- 'vention deuling; more purticulnrly with lnet'nllic packingv utilizing rings us the pucking element..

Ileretot'ore it hns been quite eonnnon to provide n piston with one or more nnnnlur grooves in eut-h ot whiehgs titted n piston ring.

'lhe present invention provides n plurulity ot piston rings :n'rung'ed side by side in such n manner ns to breuk joint, the joint ot' one pnckine ring being closed by the adjeccnt peeking ring. 1Where single packing rings ure. employed it is necessary to provide :i piston with two or more znmnlnr 'grooves in euch oi" which is fitted u packing" ring. `ln accordance with the jiresejnt` invention the piston muy have u single groove or unnulnr sent' in whiehn plu nlity oi" piston rings nre titteth thereby insuring u close jointnnnd the provision of a piston ot mini- `nunn lengl'tll.

The invention consists of the novel 'ten- -tui-es, detnils ot construction and eombinultion ol' ports, whichl hereinafter will be more jmrticulan'ly set forthj illustrated in the accompanying drawings, and pointed out in the appended claims.

ieterring; tioy the drawings, toi-ming' u purl otl the specification, Figure l is a side view of a pist on provided with packing` ein- Fig. 2 is a section on une line .fr-ww orFig. l. Fig. l is u seetion on the line y---g/ of Fig. l. Fig. -t is n detail perspective view of the piston body. Fig. 5 is a detail view oit the cop plate. Fig. 6 is a det/nil perspective view of the packing Currier. Fig. 7 is n detail perspeetive 'view of one ot theI expansion .rings :ind the packing rings mounted tllereon. Fig. 8 is an end view ot the piston with the oep plzite removed.

Corresponding and like pin-ts are referred to in the*followingdescription, and indicated in ull the views ot the drawings, by the sume reference characters. i,

The piston comprises u piston body l, which is ot" circular torni'nnd'provided ntV one end with un outer Hooge i! forming' a heed. cnp platte 3 is secured to the' opposite end ot the piston body und constitutes the other bend between which und the pnrti the packing*r und the pecking euri-ier ure. confined. The piston body hns t eentrnl opening in which the piston urod -lis secured. A boss 5 is VFormed nt one end ol' the piston body und enters un opening* formed centrally o't the` cup plnte I- and Serves to renter the lutter. Any nie-.nis muy be employed tor securing the np plate t, to the piston body and us shown machine screws or bolts (S :ire employed. Smell openings ure itu-ined in the innges f2 and cup plete 3 n short distunce troni the outer edges thereof to ndinit o t steunt, compressed uir or tbe like passingy therethrough to enter the .space in the reur oit the expansion rings to fort-e the lutter outwurd, thereby snpplementing the spring uction ol snid efvpension rings und the pnt-king rings, there by insuringl u close joint being innintnntd between the pau-kin.;r und the wulls ot the cylinder.

. The pecking carrier consists of n eylindricnl support S hnvinzgr n eent'rnlly disposed dividing [longe l). The c vlindricnl support S tits snugy upon the piston body l :1nd is prevented trom turning)T thereon by menus otl dowels l0. whit-li project troni opposite ends ot the cylinder und'enter openings formed in 'the tlunge 2 :nul cup plate 3. 'l`he dinnleter ot the dividing; tlunge tt eoineidesI with the diulneter ot' the tlungl'e L und Cup plate 3. An expnnsion rinjr 11 is tilted upon euch end ol the peeking` carrie* und is ol n. diameter to 'lenve un intervening space whit-.h mme@ opposite. the openings T into whieh the steam. compressed nir, or other medium ent? ters to exert un outward pressure upon the expnnsion rings to silpplement their spring uction to insure the Yforinution of a Close jointI between the pueking rings and the walls ol thel cylinder. 'lhe expansion rings are prevented trom turning upon the cylindrical support 8 bymeans of :i pin 12whieh is passed through :in opening?r formed in the dividing flange 9 and projects from oppo-y site sides thereof so as to enterthe spaces foi med between the split ends of theeXpmr-,f

Cit

sion rings.' Packing rings 13 are slipped upon the expansion rings and lie side by side land are arranged to break joint. Two packing rings'l are littedupon each expansion ring 11, the packing rings being prevented j from turning by means of dowels 14 and l5 projecting from thedividing flange 9 and the parts 2 and The dowellll is supl orted in an opening formed in the dividing gauge 9 and projects from the l'attena distanceto enter the vspaces'formed between the split ends of the inner packing rings.' lThe dowels 15 project from respectively the outer flange 2.a11'd the cap plate 3 and enter the spaces formed between the split ends of the outer packing rings.

Y connection with the accompanying drawings,.

. From theV foregoing description, taken in the advantages of the construction and of the method of operation will be readily Vapparent to those skilled in the art to which the invention appertains,- and While I have i described the principle of operation of the invention, together with the device which 1 now consider to be the embodiment thereof,

Idesire to have-it understood that the de- Y vice shown is merely illustrative, and that cylinder an'dva centrally disposed outwardly extending dividing fiangeydowels between the ends of the cylinder and the heads of the piston, dowels projecting laterally from -the said dividing fiange, other dowels extending inwardly from the heads of the piston, a

pin supported in the said dividing'flange' and projecting laterally therefrom adjacent the cylinder, expansion rings mounted upon endportions of the cylinder at the sides of the dividing flange and having the end por- -l tions of the before mentioned pin commg between their split ends, and a pair of split Y expansion packing rings mounted upon each 'l of the said expansion rings and arranged to break joint, the dowels of the dividing flange entering the spaces between the split ends of the inner packing rings and the `dowels of` the piston heads entering the,

spaces between the split ends of the outer packing pings. I'

2. In'v` combination a piston comprislng a piston body having. an outer fiange vat one end and a centrally vdisposed boss at its opposite end, a cap plate secured to the end of the piston body provided with the-boss, said cap plate' and flange constituting heads, a packing carrier mounted upon the piston body andconfined between the heads thereof and comprising a cylinder and a centrally disposed outwardly extending dividing flange, dowels between'the ends of the cylinder and the heads of the piston, dowels projecting laterally from the said dividing flange, other dowels extending inwardly from the heads of the piston, a pin support- -ed in the said dividing flange and projecting laterally therefrom adjacent the cylinder, expansion .rings mounted upon end portions ofthe cylinderat the sides of the dividing iiange and having the end portions of the before mentioned pin coming between'their split ends, and a pair of split expansion packing rings mounted upon'each of the said expansion rings and arranged to break joint,v the dowels of the dividing iange entering the spaces between the split ends of the'inner packing rings. and the dowels of the piston heads enterlng the spaces between the split ends of the outer packing rings.

In testimony whereof I affix my signature in presence of two witnesses. f

l HANSr GULBRANSON. Witnesses Y LLOYD B. TAIT, C. H. SMITH. 

